2117455340 has 96 divisors (see below), whose sum is σ = 5970392064. Its totient is φ = 609212160.

The previous prime is 2117455339. The next prime is 2117455367. The reversal of 2117455340 is 435547112.

It is a junction number, because it is equal to n+sod(n) for n = 2117455297 and 2117455306.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32864 + ... + 72903.

It is an arithmetic number, because the mean of its divisors is an integer number (62191584).

Almost surely, 2^2117455340 is an apocalyptic number.

2117455340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2117455340 is an abundant number, since it is smaller than the sum of its proper divisors (3852936724).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2117455340 is a wasteful number, since it uses less digits than its factorization.

2117455340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105807 (or 105805 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 2117455340 is about 46015.8161940001. The cubic root of 2117455340 is about 1284.1174659536.

The spelling of 2117455340 in words is "two billion, one hundred seventeen million, four hundred fifty-five thousand, three hundred forty".